package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.feign.SckillFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SeckillInfoVo;
import com.atguigu.gulimall.product.vo.SkuItemSaleAttrVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupAttrVo;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    AttrGroupService attrGroupService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    ThreadPoolExecutor threadPoolExecutor;

    @Autowired
    SckillFeignService sckillFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo (SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition (Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
        String brandId= (String) params.get("brandId");
        if(StringUtils.isNotEmpty(brandId) && !"0".equals(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId= (String) params.get("catelogId");
        if(StringUtils.isNotEmpty(catelogId) && !"0".equals(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        String max= (String) params.get("max");
        if(StringUtils.isNotEmpty(max) && new BigDecimal(max).compareTo(new BigDecimal(0))==1){
            wrapper.le("price",max);
        }
        String min= (String) params.get("min");
        if(StringUtils.isNotEmpty(min)){
            wrapper.ge("price",min);
        }
        String key= (String) params.get("key");
        if(StringUtils.isNotEmpty(key)){
            wrapper.and((w)->{
                w.eq("sku_id",key).or().like("sku_name",key);
            });
        }
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        List<SkuInfoEntity> list = this.list(new QueryWrapper<SkuInfoEntity>().eq("spu_id",spuId));

        return list;
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo=new SkuItemVo();
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1、sku基本信息获取
            SkuInfoEntity infoEntity = getById(skuId);
            skuItemVo.setInfo(infoEntity);
            return infoEntity;
        }, threadPoolExecutor);

        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //3、获取spu的销售属性
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, threadPoolExecutor);


        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res) -> {

            //4、获取spu的介绍
            SpuInfoDescEntity spuInfoDescEntity = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesp(spuInfoDescEntity);
        }, threadPoolExecutor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //5、获取spu的规格参数信息
            List<SpuItemAttrGroupAttrVo> attrGroup = attrGroupService.getAttrGroupWithAttrsBySpuId(res.getSpuId(), res.getCatalogId());
            skuItemVo.setGroupAttrs(attrGroup);
        }, threadPoolExecutor);

        CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(() -> {
            //2、sku的图片信息
            List<SkuImagesEntity> images = skuImagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        }, threadPoolExecutor);
        CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {
            R skuSeckillInfo = sckillFeignService.getSkuSeckillInfo(skuId);
            if (skuSeckillInfo.getCode() == 0) {
                SeckillInfoVo data = skuSeckillInfo.getData(new TypeReference<SeckillInfoVo>() {
                });
                skuItemVo.setSeckillInfoVo(data);
            }
        }, threadPoolExecutor);


        //等待所有任务都完成

        CompletableFuture.allOf(saleAttrFuture,descFuture,baseAttrFuture,imageFuture,future).get();



        return skuItemVo;
    }

}